OER Parts offers a wide selection of Manual Transmissions & Parts for your 1966 Dodge D300 Series. OER Parts offers 1966 Dodge D300 Series Bearings, 1966 Dodge D300 Series Boots, 1966 Dodge D300 Series Complete Transmissions, 1966 Dodge D300 Series Flywheel, 1966 Dodge D300 Series Gaskets, Seals & Filters, 1966 Dodge D300 Series Gears, 1966 Dodge D300 Series Hardware, 1966 Dodge D300 Series Shift Knobs, 1966 Dodge D300 Series Shift Linkage, 1966 Dodge D300 Series OE Shifters, and 1966 Dodge D300 Series Performance Shifters.